Question: what is the {end time} for {Pierre Trudeau} who has {position held} as {Prime Minister of Canada} ?
Paraphrase: what is the {conclusion time} for {Pierre Trudeau} who has {position held} as {Prime Serve of Canada} ?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q8619 p:P39 ?s . ?s ps:P39 wd:Q839078 . ?s pq:P582 ?value}